we used to have alar on apples. we used to have noon at pittsburgh you could look straight at the sun if you could find it. it was sort of like what we talked about in beijing today. >> stephen: a natural sunscreen. >> it's been 41 years of saying listen, we can grow our economy. of course we want jobs. but we also want to do it to ensure that our kids are going to be healthy, that our families are able to thrive. that our communities and the places we love to look at and enjoy are going to be there for the future. >> stephen: but we did it. we cleaned things up. things are way cleaner than we used to be. why do we need the epa any more. you did it it's like unions an child labor laws. we don't need those things any more because they figured their problems. now they can go. >> one of the things we worry a lot about is back sliding. and we aren't done. it was not until this past year that we finally set a national standard in this country to deal with mercury. >> stephen: what's wrong with mercury. i break up the the